the retention period to support flashback
the expected length of the longest-running query
the number of undo tablespaces in the database
the size of the Flash Recovery Area for the database instance
第1题：
You want to use the Flashback Transaction Query feature to identify all the changes made to your database within a specific time period. What is a prerequisite for using the Flashback Transaction Query feature？（）
第2题：
You work as a database administrator for Supportcenter.cn. You want to administer your database servers， which are running on different host machines， using the Web-enabled grid control interface. You have configured the agent on the host machines. You have started the Oracle Database 10g Grid Control utility on your machine. Which two additional components would you configure to achieve this objective？（）
第3题：
A. The backup as copy can only be taken to disk
B. The backup as copy can only be taken to tape
C. Backup can be performed only when the instance is shutdown
D. Backup will constitute all used and unused blocks in the database
第4题：
You work with a newly created database. Presently, there is no application load on the database instance.You want to create a baseline for tuning the application, so you decide to collect recommendations that can be implemented to improve application performance.What action must you take to achieve this?（）
第5题：
You work as a database administrator for Certkiller .com. In your production database， the size of Database Buffer Cache needs to be increased immediately for the current as well as future instances of the database. The Oracle instance has been configured to accommodate any changes in the size of the memory structures. At this is production database， you want to accomplish this task with no impact on the user’s connections. Which activity must you have completed before accomplishing this task？（）
第6题：
Your database instance is running with full workload after database creation. You have decided to useafixed-sizeundo tablespace. You want to use the Undo Advisor to estimate the capacity of the undotablespace. Which two factors must you consider before using the Undo Advisor to estimate the capacity of the undotablespace（）
第7题：
Your database instance is running with full workload after database creation. You have decided to use a fixed-size undo tablespace. You want to use the Undo Advisor to estimate the capacity of the undo tablespace. Which two factors must you consider before using the Undo Advisor to estimate the capacity of the undotablespace（）
第8题：
You are working on a 24X7 database. You want to design a backup strategy for your database that uses user managed backups. You want to be able to perform all backups while the database remains online. Which statement about performing user-managed backups in a 24x7 environment is true?（）
第9题：
You are maintaining the SALES database for eSoft Corporation. You have not configured ASMM on the database. You want to know what size of the SGA will provide the best performance. Which advisor would you use to determine the suitable size of the SGA？（）
第10题：
You want to perform an RMAN backup of database as a copy. Which two factors will you consider while performing the backup operation？（）